Ahsan is available for hire

Ahsan Masood

Verified Expert in Engineering

Software Developer

Location

Dallas, TX, United States

Toptal Member Since

September 8, 2022

Ahsan is a computer science graduate with over four years of core back-end development experience for large multinational enterprises. He has developed multiple back-end APIs using Java Spring Boot integrated with MySQL. Ahsan believes that focusing on performance and accuracy is paramount. He is always open to working on new technologies and domains as he wants to feel challenged and stretch his limits.

Algorithms Back-end Databases Java MySQL SQL JSON Spring REST APIs Spring Boot Spring Data JPA Microsoft SQL Server XML Back-end Architecture Apache Kafka

Portfolio

Systems Ltd

Java, MySQL, Back-end, APIs, Spring Boot

Experience

Databases - 4 years Java - 4 years Back-end - 4 years APIs - 4 years REST APIs - 4 years Spring Security - 3 years Spring Boot - 3 years Spring Data JPA - 3 years

Availability

Part-time

Preferred Environment

Windows, Java

The most amazing...

...thing I've done is revamp an offer builder engine for Etisalat as a sole developer working on everything from design and development to production support.

Work Experience

App Development Consultant

2018 - 2022

Systems Ltd

Revamped an offer builder engine for a UAE-based telecommunication company as a sole developer working on everything from design and development to production support.
Enhanced Java-based ETL job performance by more than 600%.
Developed integral modules for a large banking solution, which were later reused in other projects.
Performed a go-live activity for a large banking solution on behalf of my team.

Technologies: Java, MySQL, Back-end, APIs, Spring Boot

Experience

Offer Builder Revamp

I single-handedly revamped an offer builder engine for a large telecommunication company in the United Arab Emirates. For this project, I worked on architecture design, development, and production support. Also, I implemented core new functionalities, including a store and save mechanism and parallel back-end API calls.

ETL Enhancement

Optimized multiple Java-based ETL jobs to improve throughput and reduce memory footprint to increase job performance. The result was a performance increase, reducing the job execution time from 25 minutes to two minutes.

Middleware Solution

A middleware solution for a financial institution that connected 12 different banking systems—both internal and external—to provide smooth communication and independent iteration to all systems. Developed a total of 89 REST APIs ranging from funds transfer and balance inquiry to mortgages. Performed SIT on the client side as well as the go-live activity and post-production support.

Skills

Languages

Java, SQL, XML, HTML

Frameworks

Spring Boot, Spring, JSON Web Tokens (JWT), Spring Security, Spark, AngularJS, Hibernate

Libraries/APIs

Azure Blob Storage API, REST APIs, Spark Streaming

Paradigms

Back-end Architecture, Microservices, ETL

Platforms

Apache Kafka

Storage

Databases, MySQL, Spring Data JPA, Microsoft SQL Server, JSON, Google Cloud

Other

Algorithms, Data Structures, APIs, Back-end, YML, API Integration, Software Architecture, Healthcare Services, IBM Integration Bus (IIB)

Tools

Talend ETL, IBM MQ

Education

2014 - 2018

Bachelor's Degree in Computer Science

National University of Computer and Emerging Sciences - Karachi, Pakistan

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